Q

QOS

(quality of service) (n.) The performance limits you
set for a server instance or virtual server. For example, if you are
an ISP, you might want to charge different fees for virtual servers
depending on how much bandwidth is provided. You can limit the amount
of bandwidth and the number of connections.

query string

(n.) A component of an HTTP request URL that contains
a set of parameters and values that affect the handling of the request.

queue

(n.) In
the Java Message Service, an object created by an
administrator to implement the point-to-point delivery model. A queue
is always available to hold messages even when the client that consumes
its messages is inactive. A queue is used as an intermediary holding
place between producers and consumers. See JMS, point-to-point delivery model.